Compressor



. 1,619,466 March 1 1927' c. P. EISENHAUER COMPRESSOR Filed Jan. 22,1926 4 Sheets-Sheet '1 nvwszvron T CHARLES REIsENHAuER,

ATTORNEYS,

March 1927' c. P. EISENHAUER couraassoa Filed Jan. 22. 1926 4Sheets-Sheet 2 A TTORNE YS H Y B C. P. EISENHAUER COMPRESSOR March 1,1927. 1,619,466

Filed Jan. 22, 1926 4 Sheets-Sheet 4 11v VENTOR CHARLES P. E/SENHRUER,

A TTORNEYS/ Patented Mar. 1, 1927. p

' UNITED STATES we r. 'n rsnmuuan, or DAYTON, onro, ASSIGNOR To metDAYTON, OHIO, a COBPORATION'OF omow conr'nasson. v I p 7 Applicationfiled, January 23, 1928. "Serial 1W0. v v

My invention relates to a compressor and means of circulating gas orfluid.

It is the object of my invention to provide means 01" circulating gasesor fluids throu h a series of reciprocating pistons actuated y acontinuousl rotating driving member.

It is a furth provide such means in combination with a direct electricdrive and in combination with means'for cooling the gas or fluid s0handled;

It is a further object to provide asingle unitary construction within asingle, housing, mounted on a single foundation from which the motorfluid or gas actuating units may readily be detached when theunitarycover is removed.

Referring to the drawings:

, Figure 1 is a section through a part of the motor, the circulatingpipes, gas or fluid cir-- culating mechanism and the housing on the line1-1'of Figure 2;

Figure 2 is an end elevation from the circulating end of the completeapparatus;

tons.

' Figure 3 is an enlarged section of the gas -or fluid circulatingmechanism on the line 3-3 of Figure 2;

F'gure 4 isa section on the line 4-4 of Figure 3;

Figure 5 is a section on the line 55 of Figure 1 loolring in thedirection of the pis- Referring toithe drawings in detail, 1 is thefoundation for the complete apparatus,

which foundation or platform has a marginal upstanding flange or rib '2.On the oor of this foundation 1 are a pair of spaced su porting arms 3arranged in pairs at eit ier end of the platform or base and hay-- ingon their. upper ends the fore and aft. supporting rails'4,- the ends ofwhich are mounted upon the respective supports 3 on either end of eitherside of the p atform 11 Upon these 'supportingrails 4' is mounted theelectric motor 5 and the housing of. the compressor 6. Thus, these twounits'can be detached and moved therefrom when desired, but, when theyare in position, they are. maintained in-a predetermined position withrespect to the cover 6 and a plurality of circulating coils 7 whichsurround them. As the electric motor and thecoinpressor are directlconnected, these sup 'orting rails, u "t e common base prov e forperfect a ignment of the." vera parts; The cover 6' is mounted on thebase and provided with er object of my invention to 1,619,466 PA ENT.9"! a pipes 7 are spaced "fromone anotherby the spacer bars 11. end adriving screw consisting of 'ais'leeve liti and a screw 13.; Thisscrewisadaptedfto turn within a slot'in insert '14 in thecylim dricalpiston 15 and is 'y ildirigly held in such a position by the.cylindrical lunger 16 working within that i ton "impelled against thescrew by 1e' in'ternally locatedf helical spring' 17, one endof" whichabuts against the bottom of, the cu =shaped plunger 16 and the' othe'ragainst t ieexten nally-threaded end plate l8 ofthe piston '15.

The turn of the screw 13 "reciprocates the piston. 15 Withinthefcyl'in'der19, of which pistons there are a plurality arranged aboutthe circumference of the b'IQck QO 7 near the periphery thereof As'thescrew turns, these p1stons'are. reciprocated onefby' one so-that acontinuous flow gasor fluid willbe caused.

The P ,v arrie v a to the screw end a spidei- I I, arms of which; arethe ports'f22ffwhich ,are adapted to be sealedbythevalve "late 23', thereciprocation pi -which is limits by the' .sc'rew held 5 fiflfi'idi i lti sp d t 2 Y w i h d is sp e ma h ispi e d i. tanee sufiicientffor the ptev 2f3 tomove back .7 wardly and forwardly,i ch plate being jou'r naledor supported upo'n' te Shafhdf the screw, asat26a; rue -10 s ct: a inletp t t. j tons 15. J The air g o the cylinder whe Y a heh'ca ThisarmatureIshaft IO e d/ pp it betweenthe ""the'insertl t" timep ece- 3 11 0 [mshase, lifting the "he 31 against the 32 and for opens theball-valve 50 and :Q-

' e fluid .or gas into e chamber 38 and r h the passageway 84" into thedistribution ead 85 where it into the port 51 and thence to the innerseries of 1 17, thento the outer series of coils 7,

as shown at 7, and thence through a pipe 37 to the source of supply.-

- apipe .the worm 13.

From the source of supply the is dis-- livered to the 36. The gas thusdelivered to t ehead opensa ball valve 48 and then asses into a pipe 49by which it'is deliver to a chamber 38.- The chamber is formed by thehousing 39 whichis an integral art of the cylinder block in which arecoated the c linders 19. This cylinder block isrovlded with a pluralityof ribs 40 for ra atin heat. The bottom of the chamber 38 is ed withlubricant 41 through thefiller o 42, which lubricant is supplied by ti lwi& 43 through the supply means 44 to It will be noted that I have thusprovided a direct electric motor drive and have translate'd the highspeed of that motor into the high speed reciprocating pistons of whichone at least is always in operation so that there will be an even andcontinuous positive flow of gas or fluid through the system. By havin acommon motor frame 45 to which is bolte by the bolts 46 the casin 39 andthe carried in the end of the cage and the cages are'connected togetherby the cylinder block 20 with the cylin er head 34,

, I am able to provide a fully aligned apparatus. The gas-tight bearingmechanism 1s of the motor bolts 47. 7

It will be understood that I 'desire to comprehend' within my inventionsuch modifications as may be'nry toadapt it to varyin%conditions anduses.

y screw or worm I mean lacmg a half of'a right hand'screw and a alf'of aleft hand screw together so that the ends meet.

The circuit of the gas is as follows: Gas or fluid enters through thehead 35, unseat' eball valve 48 and then passes through e pipe 49whichleads to the chamber 38, Fig. 3. From the chamber .38 the gas paround. the sleeve 12 and screw 13 through one of the openings 14 coilsis returned to the source of supplyby the pipe87. v

distribution head 35 throu h the ipe 36 from 'the source of sup 1y intot e distributor to pass from the cylinder head into- .Ha invention whati df y y aim as new and desire to secure by Letters Patent, is:-

,1. In combination, a cylinder, a piston and a rotary driving means for'the piston engaging therewith to reciprocate it said-rotary'meansconsistingof a. worm, the thread of which passes through said pistontransversely thereon causing the piston to reciprocate as the threadadvances and retreats due to therotation thereof, and means car- 4ried'by said piston for yieldingly engaging said worm to maintain theengagement 0 worm and piston in predetermined rela-' tionship. I

, 2;.In combination, a cylinder, a pistonand a rotary driving" means forthe piston engaging therewith to reci rocate it, said rotary meansconsisting o a worm, 'the thread of which passes through said pistontransversely thereon causing the piston to reciprocate as the thread avances and retreats due to the rotation thereof, said piston beinghollow, and the interior of the iston having-access to the exterior ofthe cy inder through a slot in said piston throu h which the wormrotates, and a valve on t e end of the piston adapted to open when thepiston is traveling in one direction and close when 5 it is traveling inthe other direction. 7, v 3. In combination, a cylinder, a piston and arotary drivin means for the piston en-' gaging therewit to reciprocateit said rotary means consisting of a worm, the thread of which passesthrough said piston transversely thereon causing the piston to recipmateas the thread advances and retreats dueto the rotation thereof, saidpiston being hollow, and the interior of the plston havin access to theexterior of the cyhnder throng a slot in said piston through which theworm rotates, and a valve on the end of the piston adapted to open whenthe iston is travelmg m one 1r traveling in the other direction, asecond 'valve carried in a cylinder'head,la' cylinder ection, and c osewhen it is head, saidsecond valve being adapted to o 11 when the firstvalve is closed and to c ose when the first valve is open.

4. In combination, a cylinder, 9. piston and arotary driving means forthe piston engaging therewith to reciprocate itilsaidrotary meansconsisting of a worm, t of which p throughsaid piston transverselythereon causing the piston to recip e thread I rocate as the threadadvances and retreats due to the rotation thereof, said piston beinghollow, and the interior of the piston ha 7 access to the exterior ofthe cylinder mm igfi a slot in said piston through which the wormrotates, and a valve on the end of thepiston adapted to open when thepiston istra in one direction,-and closewhenit is tra I ing in the otherdirection, a acond valve carried in a cylinder head, a bead,

when the first valve is closed and to close when the first valve isopen, said, cylinder head having an exhaust port for conveying thematerial acted upon the piston and controlled by the valves to a pointexterior of the cylinder.

5. In combination, a plurality of axially aligned and annularly disposedcylinders, a plurality of hollow reciprocating pistons therein, a commonactuating shaft, a worm thereon engagin'g'with all of said pistons andturning therethrough in engagement therewith, said pistons havingopenings where said worm turns therethrough communicating with theinterior of the pistons, and valve means at the other end of the pistonsfor controlling the flow of material through the istons and out of thecylinders, and a secon valve means for each cylinder carried in acylinder head, a cylinder head having means for delivery of materialfrom each cylinder therethrough, said valve means in the cylinder beingadapted to be closed when the respective cylinder valve means is openedand vice versa.

6. In combination, a lurality of axially aligned and annularly disposedcylinders, a plurality of hollow reciprocating pistons therein, a commonactuating shaft, a worm thereon engaging with all of said pistons andturning therethrough in engagement therewith, said pistons havingopenings where said worm turns therethrough communicating with theinterior of the pistons, and valve means at the other end of the pistonsfor controlling the flow of material through the (pistons and out of thecylinders,

and a secon valve means for each cylinder carried in a cylinder head, acylinder head having means for delivery of material from each cylindertherethroug i, said valve means in the cylinder being adapted to beclosed when the respective cylinder valve means is opened and viceversa, and yielding means for maintaining said pistons in engagementwith said worm. p

7. In combination, an electric motor having an armature shaft, a wormmounted on said armature, a plurality of axially aligned andannularly-disposed cylinders parallel with saidarmature shaft which islocated centrally thereof, a plurality of reciprocating pistons havingslots mounted in said cylinders, said worm on said armature shaftengaging with said pistons and adapted to operate said pistonssuccessively to compress and discharge material through said cylin dersin succession, said cylin ers havin a' cylinder head having means forthe col ection of the material delivered therethrough, and valve. meansfor controlling said material in each of said cylinders, said pistonsbeing hollow and communicating with the area around said worm to drawanymaterial through the slot in said pistons through which said wormturns.

8. In combination, a driving shaft, a chamber formed around said shaftbut spaced therefrom, a worm on said shaft, a plurality of cylindersformed in one wallof said chamber, a plurality of reciprocating pistonslocated in said cylinders and engaging with said worm to be successivelyoperated thereby, and means of delivering the contents of said chamberthrough said pistons out the other ends of the cylinders away from thechamber, and yielding means for maintaining said pistons in engagementwith said worm.

9. In combination, an electric motor having an armature shaft, acasingtherefore, a second casing attached thereto but sealed therefrominto which said armature shaft projects, a worm on said armature shaft,a plurality of cylinders communicating with said second casing andforming a part thereof, a plurality of hollow'pistonstherein actuated insuccession by said worm passing therethrough, a cylinder head for saidcylinder, and valve means in said 0 linder head and-in said pistons forcontrolllng the plurality of cylinders communicating witlr said secondcasin and forming a part thereof, a plurality 0F hollow pistons thereinactuated in succession by said worm passing therethrough, a cylinderhead for said cylinder, and valve means in said cylinder head and insaid pistons for controlling the passage of material from said secondcasing through said pistons and cylinder head, and means for containinga su ply of lubricant in said second casing and or applying saidlubricantto, said worm and said pistons.

In testimony whereof, I affix my signature.

- CHARLES P, EISENHAUER.

